abrt version: 2.0.3
architecture:   i686
cmdline:        ro root=/dev/mapper/VolGroup-lv_root rd_LVM_LV=VolGroup/lv_root rd_LVM_LV=VolGroup/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet selinux=0
comment:        I dismount the usb external drive from the file manager, all clear from the file manager apps when I remove the physical usb drive this error comes out.
component:      kernel
kernel:         2.6.38.8-32.fc15.i686.PAE
kernel_tainted: 128
kernel_tainted_long: Kernel has oopsed before.
os_release:     Fedora release 15 (Lovelock)
package:        kernel
reason:         BUG: sleeping function called from invalid context at arch/x86/mm/fault.c:1087
time:           Sun Jun 26 23:15:42 2011

backtrace:
:BUG: sleeping function called from invalid context at arch/x86/mm/fault.c:1087
:in_atomic(): 0, irqs_disabled(): 1, pid: 8407, name: umount
:Pid: 8407, comm: umount Not tainted 2.6.38.8-32.fc15.i686.PAE #1
:Call Trace:
: [<c07e17f3>] ? printk+0x2d/0x2f
: [<c0435bee>] __might_sleep+0xdd/0xe4
: [<c07ec0e2>] do_page_fault+0x179/0x30c
: [<c05d8409>] ? format_decode+0xca/0x29f
: [<c05d944f>] ? vsnprintf+0x7f/0x269
: [<c0469c40>] ? arch_local_irq_save+0x12/0x17
: [<c07e9203>] ? _raw_spin_unlock_irqrestore+0x13/0x15
: [<c07e9203>] ? _raw_spin_unlock_irqrestore+0x13/0x15
: [<c07ebf69>] ? do_page_fault+0x0/0x30c
: [<c07e9cef>] error_code+0x67/0x6c
: [<c0696a90>] ? scsi_prep_fn+0x0/0x37
: [<c06960dc>] ? scsi_prep_state_check+0xc/0x7a
: [<c06969c2>] scsi_setup_blk_pc_cmnd+0x14/0xe2
: [<c0696ab7>] scsi_prep_fn+0x27/0x37
: [<c05c32d3>] blk_peek_request+0xbd/0x18b
: [<c0696301>] scsi_request_fn+0x36/0x3b0
: [<c07e9203>] ? _raw_spin_unlock_irqrestore+0x13/0x15
: [<c044c7bd>] ? del_timer+0x59/0x61
: [<c05c2f10>] __generic_unplug_device+0x30/0x33
: [<c05c59e6>] blk_execute_rq_nowait+0x65/0x84
: [<c05c5a91>] blk_execute_rq+0x8c/0xbf
: [<c05c5954>] ? blk_end_sync_rq+0x0/0x2d
: [<c05c26fe>] ? get_request+0x216/0x21c
: [<c05c2f3e>] ? get_request_wait+0x2b/0x132
: [<c0435b3a>] ? __might_sleep+0x29/0xe4
: [<c05c307f>] ? blk_get_request+0x3a/0x63
: [<c0695551>] scsi_execute+0xcb/0x110
: [<c06955ca>] ? scsi_execute_req+0x34/0xad
: [<c069561b>] scsi_execute_req+0x85/0xad
: [<c0691d17>] ioctl_internal_command.constprop.1+0x6f/0x15f
: [<c0691e57>] scsi_set_medium_removal+0x50/0x87
: [<c04bbc7f>] ? truncate_inode_pages_range+0x18c/0x209
: [<c06a2cfb>] sr_lock_door+0x1b/0x1d
: [<c06c1899>] cdrom_release+0x180/0x1e2
: [<c04697c0>] ? smp_call_function_many+0xdd/0x1b4
: [<c0435b3a>] ? __might_sleep+0x29/0xe4
: [<c050ccf8>] ? brelse+0x11/0x13
: [<c042f667>] ? should_resched+0xd/0x27
: [<c07e7f79>] ? _cond_resched+0xd/0x21
: [<c06a1df2>] sr_block_release+0x28/0x3f
: [<c0511224>] __blkdev_put+0xa7/0x135
: [<c0511394>] blkdev_put+0xe2/0xe7
: [<c04ef3e7>] kill_block_super+0x5c/0x60
: [<c04ef5be>] deactivate_locked_super+0x1f/0x40
: [<c04eff4f>] deactivate_super+0x2e/0x31
: [<c0501af8>] mntput_no_expire+0xb5/0xb9
: [<c0502396>] sys_umount+0x270/0x297
: [<c04f5402>] ? path_put+0x1a/0x1d
: [<c040969f>] sysenter_do_call+0x12/0x28